Locomotive boiler washing plant



NOV. 24,4 1931. L C.;- PLANT LOCOMOTIVE BOILER WASHING PLANT Filed July26, 1928 5 Sheets-Sheet l @MMV NOV. 24, '1931. Q PLANT LOCOMOTIVE BOILERWASHING PLANT Filed July 26, 1928 3 Sheets-Sheet 2 Maw j @W Nov. 24,1931. G. PLANTA 1,832,914

LOCOMOTIVE BOILER WASHING PLANT Filed July 2e. 1928 3 sheets-Sheet 5 l lI l l I I MM QM@ Patented Nov. 24, 1931 PATENT OFFICE LELAND G. PLANT,OF CHICAGO, ILLINOIS LoooMoTrvE ViiorLEza WASHING PLANTV Applicationfiled July 26, 192,8. Serial No. 295,577. Y

My invention relates to a complete unitary structure for effectivelydisengaging the entire steam content in the discharge from locomotiveboilers at a terminal, condensing all of this steam With freshlocomotive filling Water, storing the resultant hot filling Water andcondensed steam in a reservoir Whose outer circumference is insulatedfrom the atmospliere and storing the Water discharged from thelocomotive boilers, for use in Washing locomotives, after separatingheavy solid particles therefrom, in a reservoirv WhoseV outercircumference is cooled by exposure to the surrounding atmospherictemperature.

All of these features are fundamentally desirable to the most effectiveutilization of the discharged products Which can be reclaimed fromlocomotive boilers upon arrival at a terminal and for many years theseveral opera- 0 tions abovedescribed have been individually andcollectively practiced. But in such practices, theresults have alwaysbeen attained in tivo or more separate piecesof apparatus connected onlyby pipes Whereas I propose to conditions which makev the distinctivefeaaccomplish all of these operations ina unit able for boiler use is soimpure that locomotives must be Washed out every few days.

Locomotives arriving ata termina-l under steam, contain a large quantityof Water at steam temperature Which it is customary to reclaim bydrawing off through the blow-off valve at a low point in the boiler, thesteam pressure on top of the Water in the boiler serv-ing to force theWater out through a blowoff line to a separator ordinarily consisting 6Uof a cylindrical drum in Vwhich the heavier solid particles, or sludge,settle to the bottom and the steam liberated from the Water now atatmospheric pressure or at slight vacuum rises to the top and is thencedrawn into a con- 65 denser of the jet type that is, a drum or series ofdrums in which a jet of cold Water comes in direct contact with thesteam. If the condenser action is correctly balanced it may induce aslight vacuum effective in the separator With which it is connected. Theeffect of -this vacuum is to increase the quantity of steam liberated bythe water-from the locomotive boiler as it is discharged into theseparator. From the separator it is customary to drain the Water intoaseparate reservoir Where it is available for use in Washing locomotiveboilers. The sludge or solid matter collecting in the base of theseparator is periodically removed either manually or automatically. Fromthe condenser, the fresh Water which has become heated in contact Withthe Vcondensing steam, together With the condensed steam, drains bygravity to another reservoir from Which hot Water is drawn for fillinglocomotive boilers after they have been Washedv out.

From the foregoing, it Will be observed that the equipment required forreclaiming the blown-oif products from locomotive boilers and utilizingthese as a source of hot Wa:- ter for Washing and filling locomotiveboilers as now practiced, involves first a separator, then a condenserand two' reservoirs, one for Washing Water and the other for fillingWater at as high a temperature as it is possible to maintain With thesources vof heat available. vThe object of heating the filling Water bymeans of steam reclaimed from locomotive boilers as they are emptied isto reduce the amount of fuel that must be burned on other locomotiveswhich have been refilled and the time required to develop a Workingsteam pressure on these locomotives. Ordinarily, it is practical tomaintain a temperature of 180 degrees F. in the lling Water reservoirderived entirely from the latent heat in steam flowing to the concenser.The temperature of Water flowing from the separator to the Washing Waterreservoir is approximately the saine. But While it is desirable to havehot Water for Washing locomotive boilers to avoid the severe strainsinduced by contraction of the hot sheets that would be caused by Washingwith cold Water, it has not been found practical to use Water forwznaing boilers ata temperature above 135 degrees F. on account of thedanger of scalding nien employed to Wash the boilers. For this reason,it is necessary to reduce the temperature of Water in the Washing Waterreservoir before it can be used for Washing boilers.

In the systems described which are in common use today, considerationmust be given to maintaining the highest possible temperature in thefilling Water reservoir and also to moderating the temperature of waterin the Washing Water reservoir. These considerations necessitate housingthe filling water reservoir to protect it from the cooling effect ofexposure to the atmosphere, and also housing both the separator and thecon` denser apparatus, 'Vhile it is not necessary to house the washingwater reservoir, this is ordinarily done so that the entire apparatuscan be located in one building. To reduce the temperature of Water fromthe Washing Water reservoir to a degree suitable for Washing purposes.it is also customary to introduce a quantity of fresh cold temperingvvater, the amount being automatically controlled by a thermostaticregulator. However, this involves a Waste of Water since the volume ofWater delivered to the Washing Water reservoir would alone be ample forWashing purposes. Another disadvantage encountered in the systems nonTin use as above described is found in the dimensions of the sepaatorwhich are necessarily limited for reasons of structural economy. Thearea of the Water surface from Which the steam is liberated is thusrestricted resulting both in the retention of steam by the Water flowingto the Washing Water reservoir and the entrainment of foul Waterparticles in the steam flowing to the condenser so that under certainconditions an undesirable quantity of foul Water may be carried into thefilling Water reservoir.

In the construction of such systems as have been described which are nowin general use, the cost of housing the reservoirs together ivith theseparator, condenser, pipe connections and pumps, for delivering thefilling and the Washing Water to the enginehouse represents aconsiderable part of the cost of these systems Whether an individualbuilding is constructed for this purpose, or the apparatus be containedin part of a larger building such as the stationary boiler plant orpower house which is a part of the terminal. Furthermore, such abuilding usually being of rectangular construction if designed toshelter tWo circular reservoirs of large capacity will necessarilyoccupy considerable space and is inherently uneconomical in respect tothe utilization of such space. Interconnections between the separator,the condenser, or condensers, (which may be mounted in tandem) and theWashing and filling- Water reservoirs, which are connected respectivelyto the separator and condenser, are necessarily expensive to fabricateand maintain. Another item of maintenance expense incident to theoperation of such systems is the removal of scale accumulating in thecondenser drum and adhering to the Walls of this structure, often makingthis a difficult and expensive operation to perform aside from theinconvenience and expense occasioned by interrupting the operation ofthe system While scale is being removed from the condenser.

lith these considerations in mind, I have devised a single,self-contained structure serving as a separator, a condenser and apartitioned reservoir for the storage of locomotive filling and Washingwater, which structure can be advantageously located outdoors Withouthousing or insulation since the Washing Water compartment surrounds thefilling Water reservoir and serves to insulate it, While at the sametime presenting a more extended exterior surface to atmospheric coolinginfluences than in a non-partitioned circular tank of the same capacity,the effect being` to increase the cooling effect of atmospherictemperatures upon the washing Water in lieu of tempering this Water byadmission of additional. fresh cold Water. In my invention, the entirehorizontal, crosssectional area of the Washing` Water reservoir becomesa liberating surface for the separation of steam from Water dischargedthrough locomotive blow-off valves and delivered to the Washing Watercompartment. This not only insures the separation of all steam particlesfrom the Washing Water but the effective separating area is so largethat the velocity of steam rising from the Water is reduced to a pointthat eliminates the possibility7 of its entraining the blown off Waterparticles with their impurities and carrying them over into the fillingWater reservoir which couiprises the center or core of my structure. Thedomed roof of this structure, induces inward flow of the vapors risingfrom the disengaging surface of the filling Water, and itselfconstitutes a condenser for the liberated luf) lll)

` 'Another condensing medium of WhichIavail myself is the entire Watersurface lin the filling Water reservoir, which may be mechanicallyagitatedto accelerate this condensing effect. Inl my invention, heaviersolid particles, or sludge, in Water discharged 'from locomo tiveboilers is accumulated betvveensloping partitions, or sludge baffles, inthe washing Water reservoir. Whichconverge to la point nearthebottomofthe reservoir directly below the inlet tothis reservoir. From thispoint, the sludge' mayfbedischarged to a sewer at intervals, or in aslow continuous stream. Removal of scale accumulating on the Walls ofthe condenser chamber is facilitated by providing a removablecylindrical lining which is of somewhat smaller' diameter than the outerWall of the condenser chamber and forms, with the latter, an uptake'through which steam that accumulates beneath the roof fromvthev outercompartment, or separator, may pass upwardly in chillingimpingementiagainst'said Walls on its Way to the condenser jets, so thatcondensation and precipitation into the filling Water reservoir arecontributed to by the roof surfaces, the condensing chamber surfaces,the Water ets, and the fillingivater surfaces Condensation is preferablyaccelerated by one or more horizontal baffles, or splash plates whichtend to break up Water streams from condenser jets. The flow `of Waterthrough these condenser jets is governed by two conditions; first, it isgoverned by the temperature registered in a by-pass tube which, While itbecomes filled with steam as soon as any quantity of exhaust steam isliberated from the outer reservoir, or separator, is nevertheless soremoved from the path of the condensing Water jets that it Will not besprayed by the latter and Will therefore not be subjected to` theinsulating precipitate Which'is found so objectionable in thermostatslocated in reach of the condensing spray. Second, the condenser jet isgoverned by the height of Water in the filling Water reservoir asregistered in a riser pipe connected -to the filling Water reservoir andloca-ted in a building adjacent to the reservoir Where all controlvalves tothe Vcondenser jets may be conveniently located in a singlepanel mounted against the Wall. The distinctive features of my inventionwill be more readily understood by referring to the illustrativeembodiment shown in the accompanying drawings in Which l y ,Y

Figure 1 is a plan vievv of that portion of a locomotive terminal withwhich my Vinvention isimmediately concerned, portionsof the blow-ofi?,Wash-out, and refill lines which connect the reservoir with thelocomotive stall being omitted 5. j

Figure 2 is a vertical sectional view of the reservoir, the plane ofthesection bein sub'- stantially coincident vvith that of the lowofl"connection;

Figure 3 is a side elevation of the portion of the system shown inFigure l, as viewed from the front of Figure l and at right angles toFigure 2;

Figure 4 is a detail view of the water controlV connections responsivein part to the thermostat in the steam by-pass and in part to the Waterlevel in the filling Water compartment of the reservoir; and

Figure 5 is a vievvr on an enlarged scale in vertical section parallelwith the picture plane of Figure 2 and showing the details of thecondenser chamber.

Referring in detaillto the particular embodiment of the invention hereselected, for purposes of illustration, l and 2 represent respectivelyouter and inner concentric Walls rising from a common base 3 of thereservoir and dividing the latter into an inner compartment 4 for thestorage of locomotive filling Water and an outer compartment 5 for thestorage of locomotive Wash-out Water. The partitions l and 2 in therelation illustrated Will provide approximately identical capacities inthe'tvvo storage compartments 4 and 5 but obviously these relativecapacities may be varied at will.` An important feature of thisinvention resides in the fact that with the Wash-out Water compartment 5exposed externally to atmospheric cooling iniuences and the fillingWater compartment 4 surrounded by said compartment 5, the loss of heatwill be induced in the Wash-out Water Where it is desirable and vvill belargely prevented in the filling Water where cooling would beundesirable.

Surrounding the reservoir is a roof 6, serving in common to bothcompartments, preferably domed in its design and providing over thecompartments, a space which serves as a communication between thecompartments, induces flow of volatiles which disengage from surface ofthe Wash-out Water, inwardly, so that when condensed they Will beprecipitated into the filling Water compartment, and affords aneffective condensing influence upon these volatiles. To ensure amplecondenser efficiency above the filling Water, roof 6 is surmounted by acondensing chamber 7, into which the volatiles from blown off' productsWill be directed by the shape of the roof.V Condenser 7 is equipped witha suitable number of spray nozzles, typified in the present instance bynozzle 8, which 'Will function more or less constantly in order to takecare of the exhaust steam arriving through exhaust pipe 9 from powerapparatus such as pumps 10 and l1; a Water jet 12Which Will be normallyinactive but automatically releasable in response to an accumulation ofhot volatiles from the diseni gaging surface of the washing watercompartment 5, for instance, by having the thermostat 13 located in aby-pass 14 which leads from an'elevated point beneath the roof 6, intothe upper portion ofthe condenser 7; and the water spray or dischargenozzle 15 which while assisting in the condensation of such volatilesmay be present when it functions, is primarily for the purpose ofreplenishing water in the filling compartment t when the latter becomesexhausted to a predetermined low level, to which end the said nozzle 15will be brought under a water level control to be described.

The controls for the water nozzles 12 and 15 which are responsiverespectively to the thermostat 18 in the vapor by-pass 14 and a lowwater condition, will preferably be located on a baseboard or wallremote from the reservoir where will also be found suoli other neededcontrols as may be conveniently associated with them. Thus 16 representsa hydrostatic standpipe connected through its bottom branch lG-A withthe illing water compartment l vented at top so that water will alwaysstand in this pipe at the same level in which it stands in the fillingcompartment.

17 represents an outside float so connected with the valve 18 in thebranch 19-B that whenever the level of water in standpipe 16 is loweredsufficiently to empty the ioat 17, valve. 1S will automatically open andpermit the flow of fresh water through pipe 15S-A to the water nozzle 15and this flo-w will continue until water has been replenished in thefilling compartment 4 to a desired level of safety. Similarly, 20represents an outside iioat, in communication with an elevated point inthe standpipe 16, so connected with the normally open valve 21 in thepipe S-A that supplies the normally running nozzle 8 that whenever thewater reaches a level in filling water compartment 4 which would causewaste, float 2O fills and its weight closes the valve 2 until such timeas the water level mav again fall in the compartment 4. Finally` we havein the group of controls, a thermostatically controlled valve 22, whoseactuating means Q2-A is subjected through the thermopile connection 1-Awith the thermostat 13 in such manner that whenever the thermostat 13registers the presence of steam vapors in the by-pass 1st, valve 22 willbe open to release condensing water through the spray nozzle 12.

3 represents an overflow connection between the compartment le and thecompartment 5 through which excess `filling water may escape into thewashing water compartment in case of need and 24 represents an overflowand escape connection from the washing water compartment and into thesewer connection Overiiow connection 24 is preferably on a lower levelthan the connection 23 so that the flow of waste water is always towardthe sewer and never from the Washing water compartment into the fillingwater compartment.

Inasmuch as the reservoir constitutes .a unitary, self-contained,enclosed structure, it will be desirable to employ at some convcnientplace, for instance in assembly cover 26 of the condenser 7, a vent 27which while normally closed, will open either under the condition ofexcessive vacuum within the reservoir or excessive steam pressuretherein, said valve being arranged to discharge, for instance, throughthe vent pipe 27-A.

The condenser chamber which surmounts the roof 6 will preferably embodyin its structure not only its outer wall but a concentric inner wall7-A, spaced from wall 7 sutliciently to leave an uptake passage 7-B forvolatiles accumulating beneath the roof 6, said inner wall 7-Aterminating short of the upper end of the condenser chamber so as toafford communication between the uptake 7B and the central space inwhich the spray nozzles act; and said inner wall also depends below thelower end of the outer wall 7 and beneath the apex of the roof in orderto direct the volatiles into the uptake. With the spray nozzles playingin the central space of the condenser and keeping the inner wall 7A cooland the outer wall 7 exposed to the cooling influences of atmosphere, itwill be seen that condenser capacity will be contributed to largely byimpingement of the vapors against these walls 7 and 7-A. Interceptingthe downward path of the water sprays and spaced a suitable distancebeneath the lower end of the inner wall 7 is a baffle 7C substantiallyhorizontal and serving the function of breaking up the water `iets.Surrounding the water spray condenser in position to prevent splashingof the interrupted water sprays over into the water washing compartmentis a depending apron 28.

The aggregate of condensing influences obviously will include the roofsurfaces, the surfaces of the depending apron 28, the surfaces of thespaced condenser chamber walls, the jets of water from the nozzles, thebaiies 7-C and even the surface of the water in the filling watercompartment.

The disengaging surface for the volatiles will consist of the entiresurface area of water in the washingwater compartment 5 and theopportunity for the volatiles from this relatively large disengagingsurface, to iiow inwardly to the condensing region over the fillingwater compartment is substantially uniform p throughout the washingwater cornpartment. A

The separating, condensing, and sorting blow-0H connection adjacent thereservoir which terminates in a downwardly directed spout 30,discharging into lthe outer compartment of the reservoir. and adapted tobe shut off at will through means of avalve 29-A. Blow-0H connection 29also communicates through valve 29-A and pipe 29-B with the sewerconnection 25 and the latter is provided with the usual vent 25-A forsteam as a means for relieving excessive pressure. Vertically beneaththe vspout 30, the outer compartment of the. reservoir has a separatorchamber 3l defined by downwardly converging baffles 32 and havingadjacent to its `lower ends, a sludge discharge 31-A. The entireblown-off products from the locomotive are delivered into the spacebetween the baflies 32, where the sludge or solid matters in suspensionare permitted to settle and pass out either gradually or continually asmay be preferred, through the discharge 33 and the water escaping overthe upperv limits of the baffles into the annular outer compartment 5where the relatively large steam disengaging space is developed, heat islargely transferred through the wall 2 to the filling waterin thecompartment 4, and the process of saving the heat units through means ofvolatiles is generally favored as already pointed out. Y

33 represents a pipe leading from the washing water compartment 5 to thewashout pump 10 by which washing water is discharged toward thelocomotive stall through pipe34; and 35 represents a pipe leading fromthe filling water compartment 4 to the pump ll by which filling water isdischarged toward the locomotive stall through a pipe 36. 37 and 38represent emergency discharge connections through means of whichcompart-- ments 4 and 5 may be emptied when necessary. 39 represents anemergency water supply connection to the outer compartment 5 which willpermit the supply of water to the latter in case blow-off water is notavailable. 40 represents an emergency steam heating plant that may beused to bring up the temperature of the filling water in compartment 4in case of necessity, said pipe having its discharge end submerged incompartment 4 and equipped with a nozzle and vent usually referred to inthe art as a noiseless heater.

I claim: f

l. A locomotive boiler washing and refilling apparatus, comprising afirst compartment adapted to receive and separatethe volatiles from thewater in products blown off from locomotives, and also to store saidwater for washout purposes; a second compartment adapted to storefilling water, said compartments having a common wall separating themand terminating above the maximum water level of either compartment anda roof common toboth compartments spaced above said wall and leavingbetween the wall and roof a passage corresponding'in horizontaldimension substantially to that of the wall permitting free fiow fromthe first compartment to the second compartment of volatiles disengagedin said first compartment, said roof and the confines of and the watersurface in said second compartment constituting a surface condenser forsaid volatiles; and a condenser receiving and delivering as condensateto the second compartment, volatilesthatare not precipitated by saidsurface condenser. Y 2.v A locomotive boiler washing and fillingapparatus, comprising a first compartment having a connection throughwhich it'receives products blown off from locomotives, and constitutinga combined washout water storingl and a volatiles-disengaging space; asecond compartment constituting a filling water storingand'volatiles-condensing space, said compartments having a commonconfine which separates them up to a level higher than the maximum waterlevels in the two compartments, anda roof common to both compartmentsspaced -above said common confine' and 'establishing communication oversubstantiallythe whole horizontal dimension of said confine between saidcompartments through which volatiles disengaged in the first compartmentmay fiow freely into the space above the water in the secondcompartment, and there enter into condensing contact with the surface ofthe filling water and the` roof and other confines of said secondcompartment; and a fresh water condenser located above the water levelins'aid second compartment, receiving volatiles fromsaid secondcompartment that are not condensed by such surface contact anddelivering the same as condensate to said second compartment. Y y

3. `A locomotive washing and filling apparatus,comprising firstandsecond compartments partitionedrone from the other to a level above`the maximum water 'level in either of said compartments, and having aroof common to both said compartments spaced above the level to whichthey are partitioned 'and providing a top confine for a horizontally`extensive volatiles fiow space through which said compartmentscommunicate,iand forming with the confines of said compartments in aclosure tight against the `escape of volatiles from said compartments;the first compartment-having a delivery connection through which itreceives products blown off from locomotive boilers and constituting acombined volatiles-disengaging and washout water-storage space; thesecond compartment constituting a combined filling water-storing andvolatilescondensing space; and said second compartment also having afresh water condenser receiving from said second compartment, volatilesthat are not" precipitated by surface ian condensation therein anddelivering the same to said second compartment as condensate.

4. A locomotive boiler washing and relling apparatus, comprising a firstcompartment adapted to receive and separate the volatiles from the waterin products blown olf from locomotives, and also to store said water forwashout purposes; a second compartment adapted to store filling waterand having communication with the first compartment above the maximumwater line of the compartments, said communication permitting free fiowfrom the first compartment to the second compartment of volatilesdisengaged in said first compartment, and the confines of and the watersurface in said second compartment constituting a surface condenser forsaid volatiles; and a condenser receiving and delivering as condensateto the second compartment, volatiles that are not precipitated by saidsurface condenser; the first compartment being constructed with apartition defining a sludge-conning space, and having an outlet forwashout water located on the opposite side of the partition from saidsludge-confining space, whereby the sludge is baffled against access tosaid outlet.

5. A locomotive blowoif, washout, and refill apparatus, comprising afirst compartment having a connection through which it receives productsblown off from locomotives, said first compartment including a separatedsludge-receiving space into which said products are delivered, a washoutwater storing space outside of said sludge receiving space, avolatiles-disengaging space above said washout water storing space, asludge discharge leading from said sludgereceiving space, and a washoutwater discharge baiied from said sludge receiving space; a secondcompartment adapted to store filling water, partitioned from said rstcompartment to an elevation higher than the maximum water level ofeither compartment, but having free communication for the flow ofvolatiles from the first compartment above said level; a top closure forsaid second compartment, comprising confines which together with thesurface of the water in said second compartment constitute a surfacecondenser; and a water supply adapted to augment the condensation ofvolatiles in said second compartment.

6. A locomotive boiler washing and refilling apparatus, comprising afirst compartment adapted to receive and separate the volatiles from thewater in products blown .oftl from locomotives, and also to store saidwater for washout purposes; a second compartment adapted to storefilling water, said compartments having top, side and bottom confineswhich completely7 close them against the escape of volatiles, .includinga partitioning confine common to both compartments which terminatesabove the maximum water line in either compartment but beneath their topconfines, thereby leaving between the compartments an upper horizontallyextensive communication permitting free flow from the first compartmentto the second compartment of volatiles disengaged in said firstcompartment, and the confines of and the water surface in said secondcompartment constituting a surface condenser for said volatiles; and acondenser receiving and delivering as condensate to the secondcompartment, volatiles that are not precipitated by said surfacecondenser; said compart ments existing in a single structure and thepartitioning confine of said compartment leaving them in heat transferrelation one to the other.

7. A locomotive boiler washing and refilling apparatus, comprising afirst compartment adapted to receive and separate the volatiles from thewater in products blown off from locomotives, and also to store saidwater for washout purposes; a second compartment adapted to storefilling water, said compartments having confines which render themsubstantially tight against the lescape of volatiles, including a commontop confine and a common partitioning confine which terminates above themaximum water level of either compartment but below the common topconfine, and leaves between said coinpartments a horizontally extensivepassageway permitting free iiow from the first compartment to the secondcompartment of volatiles disengaged in said first compartment, and theconfines of and the water surface in said second compartmentconstituting a surface condenser for said volatiles; and a condenserreceiving and delivering as condensate to the second compartment,volatiles that are not precipitated by said surface condenser; saidcompartments constituting parts of a substantially unitary structure,and their partitioning confineV comprising an arcuate wall which leavesthe compartments in heat transfer relation one to the other.

8. A locomotive boiler washing and rcfilling apparatus, comprising afirst compartment adapted to receive and separate the volatiles from thewater in products blown off from locomotives, and also to store saidwater for washout purposes; a second compartment adapted to storefilling water and having n communication with the first compartmentabove the maximum water line of the compartments, said communicationpermitting free flow from the first compartment to the secondcompartment of volatiles disengaged in said first compartment, and theconfines of and the water surface in said second compartmentconstituting a surface condenser for said volatiles; and a condenserreceiving and delivering as condensate to the second compartment,volatiles that are not precipitated by said surface condenser; saidcompartments being of annular form, concentric the second within thefirst, and having a common roo-f structure. i

9. A locomotive boiler washing and refilling apparatus, comprising afirst compartment adapted to receive and separate the volatiles from thewater in products blown olf from locomotives, and also to store saidwater for washout purposes; a second compartment adapted to storefilling water and having communication with the first compartment abovethe maximum water line of the compartments, said communicationpermitting free flow 'from the first compartment to the secondcompartment of volatiles disengaged in said first compartment, and theconfines of and the water surface in said second compartmentconstituting a surface condenser for said volatiles; and a condenserreceiving and delivering as condensate to the second compartment,volatiles that are not precipitated by said surface condenser; saidcompartments existing as a substantially unitary structure, with thefirst compartment surrounding the second compartment, and having acommon roof structure of conical form whereby the space above thecompartments enlarges toward the condensing area.

10. In locomotive blowoff, washout, and refill apparatus, a firstcompartment having a connection through which it receives blown olfproducts from locomotives, said first compartment constituting acombined washout water-storing and volatiles-disengaging space; a`second compartment constituting a filling water-storing space; saidcompartments being separated up to a level higher than the maximum waterlevel of either compartment; and a roof structure enclosing bothcompartments and having a space beneath it through which volatilesdisengaged in the first compartment flow freely into the space above thewater level in the second compartment; said roof structure havingbeneath it, and over the second compartment, a depending baiiie wallthat downwardly defiects volatiles fiowing beneath the roof structure.

11. A locomotive blowol, washout, and rell apparatus as described inclaim. 10, in which one of the compartments surrounds the other; theba-file wall is shaped to define an enclosed space beneath the roof; andthere is in said enclosed space a fresh water condenser.

, 12. A locomotive blowofl", washout, and relill apparatus as describedin claim 10, in which one of the compartments surrounds the other, theroof is approximately conical in shape, and there is at the apex of thecone a vertical condensing chamber having within it a water spray and aninwardly spaced vertical wall defining an annular space the other, theroof is approximately conical.

in shape, and there is at the apex of the cone a vertical condensingchamber having within it a water spray and an inwardly spaced` verticalwall defining an annular space through which volatiles arise to meet thewater spray; the said inwardly spaced wall depending beneath theuppermost portion of the roof structure. Y v

Y 14:. A locomotive blowoif, washout, and refill apparatus as describedin claim 10, in which one of the compartments surrounds the other, theroof is approximately conical in shape, and there is at the apex of thecone a vertical condensing chamber having within it a water spray and aninwardly spaced vertical wall defining an annular space through whichvolatiles arise to meet the water spray; the said inwardly spaced walldepending beneath the uppermost portion of the roof structure; and therebeing beneath said condenser a horizontal baiiie.

' 15. In a locomotiveterminal, a reservoir partitioned intocompartments, a roof over said compartments, a condenser chambercommunicating with the space beneath said roof, a water spray in saidcondenser chamber, a by-pass leading from the space beneath the roof, tothe upper portion of said condenser chamber, a thermostat inV saidbypass, and a water supply for said spray, controlled by saidthermostat.

Y 16; In a locomotive terminal, a'reservoir partitioned intocompartments, a roof over said compartments defining a space above them,through which they communicate one with another, an upstandingcondensing chamber communicating with the space defined by the roof, andincluding outer and inner walls between which vapors can rise to theupper portion of the condensing chamber, a water spray discharging intospace within the inner wall, a vapor by-pass passage leading from thespace beneath the roof into the upper portion of the condensing chamberindependently of the space between eof IIB

the condenser walls, and a thermostat in said Y l by-pass havingcommunication through which it controls discharge of water into thecondensing chamber.

17. In a locomotive terminal, a reservoir having a partition dividing itinto inner and outer compartments, a. pipe through which blown offproducts from locomotive boilers are discharged into the outercompartment, and a roof covering both said compartments; the upperportion of said partition terminating above the maximum water level ofboth compartments but below the said roof and thereby leaving a freespace between the compartments through which volatiles ow from the outercompartment to the inner compartment; and said roof and the confines ofthe inner compartment constituting a surface condenser for volatilesdisengaged .in said outer compartment.

18. ln a locomotive terminal, a reservoir divided into inner and outercompartments, a roof covering said compartments and providing a spacethrough which thev communicate one With another, and a pipe throughwhich blown off products from locomotiveI boilers are discharged into anouter compartment of said reservoir; there being in said outercompartment, baiiies adapted to concentrate sludge from the blown oiifproducts, and a washout Water outlet outside ot said bafies.

19. A locomotive boiler Washing and refilling apparatus, comprising alirst compartment adapted to receive the volatiles from the Water inproducts blown off from locomotives, and also to store said Water forwashout purposes; a second compartment adapted to store filling waterand having communication with the first compartment above the maximumWater line of the cornpartments, said communication permitting free flowfrom the irst compartment to the second compartment of volatilesdisengaged in said first compartment, and the contines of and the Watersurface in said second compartment constituting a surface condenser forsaid volatiles; and a condenser receiving and delivering as condensateto the second compartment, volatiles that are not precipitated by saidsurface condenser; said com partments being ofannular form, concentricthe second Within the first, and having a com mon roof structure.

Signed at Chicago, Illinois, this 18th daT of' July, 1928.

LELAND G. PLANT.

